hgetall
目录
Returns all fields and values of the hash stored at key.
In the returned value, every field name is followed by its value, so the length
of the reply is twice the size of the hash.
Examples
127.0.0.1:6379> HSET myhash field1 "Hello"
(integer) 1
127.0.0.1:6379> HSET myhash field2 "World"
(integer) 1
127.0.0.1:6379> HGETALL myhash
1) "field1"
2) "Hello"
3) "field2"
4) "World"